{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "At PN63 , in the brainstem , there was a decrease in choline transporter , a female - only decrease in 5HT1A and a male - only increase in 5HT2 receptor binding ."}
{"Chemical": ["choline"]}